Applicator



Sept. 13, 1938. s. M, LEWIS 2,130,305

APPLICATOR Filed Feb. 20, 1957 ATTORNEY Patented Sept. 13, 1938 UNIT ED STATES YFFHCE JIJ-his invention relates to applicators, and particularly .to 4those for injecting separate medicaments-.intocbody cavities wherein the medicamentsiare. rendered effective incidental to their chemical unionor interdecomposition.

It is the .principalobject of the invention to provide an. applicator of this character constrrucetedyfor substantially simultaneous injection of the separate medicaments so that reaction takesnplace ,immediately upon introduction into a body cavity to be treated.

Other objects of. the invention are to provide a rsimpleland. relatively inexpensive applicator constructionyto provideanapplicator which is ofroompact form and relativelysmall dimensions; tozprovidaanapplicator capable of injecting separate chemicals, one` intablet or capsule form, and .,thezother incapsule form to contain sufficient. fluid to effect @desired reaction of the chemicals; to .provide an applicator which is readily loaded with 'i'.the 1 separate .chemicals and .kept ready r for-:use ;a to :provide .against accidental discharge -4 .f of :the applicator y.when loaded; and: to

provideganapplicator thatisreadily cleaned and kept.;in :sanitary,fcondition.

En'iaccomplishingcthese land kother objects. of the';inventionas1;hereinafter..pointed out-I have provided .improved details of structure, the preferrect form of ,whichfis illustrated in' the accompanying drawing, wherein:

Fig. 1isf;aperspective view of an applicator constructed inxaccordance with the present invention.

Eig..2r.f-is alongitudinalsectional view through the f-.applicaton Lwhich `is loaded vwith separate medicaments ,orchemicals preparatory for use.

Eig.3 Lis-agsimilarsectional view showing the applicator-.after the tablet vhas been ejected and just prior 4tocollapse ofthe capsule.

Eig.f4 isfa crossfsection through the applicator on the line 4-4 of Fig.:2.

,-Eigr is;agdetailperspective viewof the parts of thefapplicator, shown .in :disassembled spaced relationfto better'illustrate their construction.

6 isa crossfsection through theapplicator onthelinerG--G of Fig. y2.

Fig.' 7 isfa ldetail perspective view of a capsule element adapted for use inthe applicator.

.fl'ig..8 is a` perspective vView of the tablet element usedin the applicator.

Referring, more in detail to the drawing:

ll .designates-,an applicator constructed in accordance rwiththe present invention, and which is shown asinluding .a..barrel ,2, consisting of olif-nozzle ,and tbody'portions -3 and.4. The body portion l oi the barrel includes a tubeE, having anaxial bore 6 forming a. capsule containing compartment l at one end thereof. The opposite end 8 of the vbore is internally threaded, as at '9, to accommodate a threaded plug l@ for closing that end of the barrel. The threaded plug l@ has a flanged head ll that is adapted to seat against the end of the tube to form a substantially uidtight joint. The opposite end l2 of the tube has a reduced threaded neck I3 forming an annular stop shoulder I4 to mount the nozzle portion 3 of w the barrel. The nozzle t* includes a cylindrical section, conforming to the outer diameter of the body portion 4, and has an internally threaded socket l5 to engage the threaded neck. The forward end of the nozzle is slightly rounded, as indicatedat I6, to permit ready entrance of the barrel into .a body cavity.

Formed at the forward end of the nozzle is a cylindrical socket I1, having a slightly tapering annular wall, aring outwardly toward the end of the nozzle. The opposite end of the nozzle has a cylindrical bore i8 of slightly larger diameter than the socket Il, and terminating short thereof to provide an internal, annular rib or stop flange I9 formingy a bearing or guide opening 20 for an ejector 2l. The ejector 2l includes a cylindrical body 22 of suitable diameter to be freely slidable in the opening 23 and has a flanged head 23 on its forward end to slidably engage in the socket Il to expel a medicament, which in the illustrated instance is in the form of a tablet. The head 23 cooperates with the body portionl of the ejector to form a stop 25 adapted to engage the outer face 26 of the internal stop flange I9.

,. The body portion of the ejector is of suicient 3o length to project within the bore I8 a distance substantially equal to the length of the tablet 24, so that when the ejector is moved to its forward most position'the face 21 of the head aligns with v the forward end of the nozzle. The body portion ofthe ejector is provided with an axial bore or drainage channel 28, extending therethrough, and threaded in the rear end thereof is' a threaded shank 29 of a puncturing device Sli.

The puncturing device 30 is of suflicient length 4 to mount a washer-like guide 3l that is threaded on the shank 29, and is of suicient outer diameter to be freely slidable in the bore i8. The guide is threaded against the end of the body portion of the ejector to lock the puncturingrdevice against relative rotary movement in the ejector. The guide forms a stop for engagement with the inner lface of the flange i9' to prevent displacement of the ejector from the open end of the 55,

nozzle. The puncturing device has a cone-shaped forward end 32 to provide a point 33 that is adapted to puncture the end of the capsule 34, as later described. The puncturing device has a central channel 35, communicating with the channel 28, and has inlet ports 36 formed in the periphery of the cone adjacent the point thereof and through which liquid in the capsule drains for discharge through the channel of the ejector after expulsion of the tablet. The base portion of the cone is provided with side ports 361 leading into the channel 35. These openings are located at approximately the point where the end of the capsule engages the pin When the capsule has been pushed thereover to its fullest extent, thereby allowing for complete drainage of the capsule. The ports 3S' are relatively small so that the tube will not catch upon the edges thereof. For these reasons two or more of these ports may be provided to permit quick emptying of the capsule.

Slidable in the bore 5 is a piston type plunger 31, having a shank or stem 38 equipped with a spiral thread 39 that is engageable in a threaded opening I8 of the plug I0. When the plunger is in retracted position, or engaging the plug ID, the stem projects from the end of the plug a sufficient distance to provide the desired movement of the plunger in the barrel to effect puncture and partial collapse of the capsule and displacement of the tablet. The outer end of the stern carries a knob 4I whereby the stem may be rotated to reciprocate the plunger. The tablet 24 conforms in shape to the socket I1 and has a slightly tapered peripheral surface to wedge slightly within the socket.

The capsule 34 is best illustrated in Fig. '1, and includes a tube 42 formed of a relatively thin, soft material capable of being readily punctured by the point 33 of the puncturing device. The bottom or forward end of the capsule includes a central flat portion 43 that is engaged by the point 33, and the periphery thereof is slightly bevelled, as at 44. The opposite or fill end of the capsule is crushed together and closed by a clip 45, and the clip is shaped as shown in Fig. '1, so that the ends thereof are brought within the connes of the cylindrical portion of the tube as clearly shown in Fig. '7.

In using an applicator constructed as described, the nozzle portion 3 is unscrewed from the body portion 4, and the plunger is retracted to its nnermost position by rotating the knob 4I in a counter-clockwise direction. A filled capsule 34 is then inserted in the chamber 1, With the clipped end thereof abutting against the plunger 31. The nozzle, carrying the ejector, is then screwed onto the body portion, after which a tablet is inserted in the socket I1. When the medicaments are thus inserted they are located in tandem and separated by the ejector. The device is then inserted in the body cavity and the knob 4I rotated in a clockwise direction to cause the capsule to be moved against the point of the puncturing device to eiect penetration of the point into the body of the capsule and partial collapse-thereof. The tablet provides sucient resistance to support the ejector in puncturing position, however, as soon as the point has entei-ed the interior of the capsule, the ejector is moved in a forward direction incidental to continued rotation of the knob to expel the tablet.

The puncturing device enters the capsule a suficient distance so that the ports 36 in the cone 32 thereof are in direct communication with the interior of the capsule. The liquid in the capsule then drains through the openings 36 and ports 36 and through the channels 35 and 28 into the body cavity. The liquid, upon contacting the tablet, reacts therewith to produce the desired chemical reaction directly at the point where they are introduced.

After use of the applicator, the parts are in the position shown in Fig. 3, with the empty capsule lying partly within the bore I8 and partly Within the chamber 1. The nozzle is then unscrewed from the body portionv to permit removal of the empty capsule. After use the device is readily cleansed, and relled preparatory to subsequent use.

From the foregoing it is obvious that I have provided an applicator which is effective in substantially simultaneous injection of the separate medicaments, so that reaction takes place immediately upon introduction into a body cavity. It is also obvious that the applicator is of compact form, and is adapted to be loaded with separate chemicals or medicaments and kept ready for use without danger of accidental discharge owing to the threaded engagement of the rod with the plug closing the rear end of the barrel. It is also obvious that the ejector not only provides for positive displacement of the tablet, but also provides for drainage of the liquid contained in the capsule.

What I claim and desire to secure by Letters Patent is: A

l. A device of the character described, including a barrel having a medicament containing socket, anejector slidable in the barrel to effect ejection of medicament contained in said socket, a compartment in the barrel for housing a frangible capsule containing a uid adapted to react with the medicament, and means in the barrel for effecting disruption of the capsule and ejection of the medicament by the ejector.

2. A device of the character described, including a barrel having a medicament containing socket and a capsule containing compartment, an ejector slidablein the barrel to effect ejection of the medicament contained in said socket, a puncturing device on the ejector, and a plunger in the barrel for effecting movement of the capsule against the puncturing device to effect puncture of the capsule and ejection of the medicament contained in said socket.

3. A device of the character described, including a barrel comprising interconnected body and nozzle portions, said nozzle portion having a socket for containing a tablet, means in the nozzle portionr for ejecting the tabletfrom the socket',

puncturing means in the barrel, said body portion having a capsule containing compartment, and means in the body portion for moving the capsule in said compartment against the puncturing means to effect drainageof the capsule and expulsion of the tablet.

4. A device of the character described, including'a barrel comprising interconnected body and nozzle portions, said nozzle portion having a socket for containing a tablet, an ejector slidatle in the nozzle portion for ejecting the tablet from the socket, a puncturing device on the ejector and having a port communicating with a port in the ejector, said body portion having a capsule containing compartment, and a plunger in the body portion for moving a capsule in said compartment against the puncturing device to effect drainage of the capsule through said ports and expulsion of the tablet by said ejector.

5. A device of the character described, includ- Lif) ing a barrel having a medicament containing socket, an ejector slidable in the barrel to eiect ejection of medicament contained in said socket, a compartment formed in the barrel in axial alignment with said socket for housing a frangible capsule containing a fluid adapted to react with the medicament, a plunger in the barrel for eI"- fecting disruption of the capsule and ejection of the medicament by the ejector, and an actuator for the plunger having threaded engagement With the barrel.

6. A device or" the character described, including a barrel having a medicament containing socket and a capsule containing compartment', an ejector slidable in the barrel to effect ejection of the medicament contained in said socket, a cone-shaped puncturing device on the ejector having a drainage channel communicating With a channel in the ejector, and a plunger in the barrel for effecting movement of the capsule against the puncturing device to effect puncture of the capsule and ejection of the medicament contained in said socket.

'7. A device of the character described, including a barrel comprising interconnected body and nozzle portions, said nozzle portion having a socket for containing a tablet, an ejector movable in the nozzle portion for ejecting the tablet from the socket, a puncturing device on the ejector and having ports communicating With a port in the ejector, said body portion having a capsule containing compartment in alignment With the socket, a plunger in the body portion for moving the capsule against the puncturing device to effect drainage of the capsule through said ports and expulsion of the tablet by said ejector, and means for limiting movement of the ejector.

8. A device of the character described, including a barrel for supporting in tandem a medicament in tablet form and a capsule containing a medicament adapted to react with the tablet, an ejector movably supported in said barrel between the tablet and capsule, capsule puncturing means inthe barrel, and means in the barrel for effecting puncture of the capsule and movement of the ejector to effect expulsion of the tablet.

9. A device of the character described, including a barrel for supporting in tandem a medicament in tablet form and a capsule containing ay liquid adapted to react with the medicament, an ejector interposed between the tablet and capsule, means on the ejector for puncturing the capsule, and means movable in the barrel for moving the capsule in puncturing relation with the puncturing means and for moving the ejector in the barrel to eject the tablet.

10. A device of the character described, including a barrel having a medicament containing socket, an ejector slidable in the barrel to elect ejection of the medicament contained in the socket, a puncturing device on the ejector having a cone-shaped point provided With a port adjacent said point and a side port adjacent the base of the cone, means supporting a capsule in the barrel in puncturing relation with said point, and a plunger slidable in the barrel and engageable with the capsule to elect puncture of the capsule, ejection of the medicament, and drainage of the capsule through said ports.

11. A device of the character described, including a barrel for supporting in tandem a medicament in tablet form and a capsule containing a medicament adapted to react With the tablet, an ejector movable in the barrel between the tablet and capsule, a cone-shaped puncturing device on the ejector having a drainage channel communicating with an aligning drainage channel in the ejector and provided With ports adjacent the point and base of the cone respectively communicating with said channels, and means in the barrel for electing puncture and collapse of the capsule including expulsion of the tablet by said ejector.

SIDNEY M. LEWIS. 

